fix(twitter): warn when xreach < 0.3.2 (longform tweet support) (#127)

xreach-cli v0.3.2 added:
- extractTweetText() preferring note_tweet.text for long tweets
- X Article URL support (/article/ path)

Previously, doctor reported 'ok' even when the user had v0.3.0/v0.3.1
installed, silently failing to read longform tweets. Now check() reads
`xreach --version` and returns a warn with upgrade instructions if the
version is below 0.3.2.

Closes #126

Co-authored-by: neo_minion1 <minion@openclaw.ai>

agent_reach/channels/twitter.py

@@ -5,6 +5,19 @@ import shutil
 import subprocess
 from .base import Channel
 
+# Minimum xreach-cli version with longform tweet and X Article support.
+# v0.3.2 added: extractTweetText() preferring note_tweet for long tweets (#aad6a16)
+# and X Article URL support (/article/ path, #2e05825).
+_MIN_XREACH_VERSION = (0, 3, 2)
+
+
+def _parse_version(ver_str: str) -> tuple[int, ...]:
+    """Parse a semver string like '0.3.2' into a tuple (0, 3, 2)."""
+    try:
+        return tuple(int(x) for x in ver_str.strip().split(".")[:3])
+    except (ValueError, AttributeError):
+        return (0, 0, 0)
+
 
 class TwitterChannel(Channel):
     name = "twitter"
@@ -24,13 +37,31 @@ class TwitterChannel(Channel):
                 "xreach CLI 未安装。搜索可通过 Exa 替代。安装：\n"
                 "  npm install -g xreach-cli"
             )
+        # Check version — longform tweet support requires >= 0.3.2
+        try:
+            ver_result = subprocess.run(
+                [xreach, "--version"], capture_output=True,
+                encoding="utf-8", errors="replace", timeout=5
+            )
+            version_str = (ver_result.stdout or ver_result.stderr).strip()
+            version_tuple = _parse_version(version_str)
+            if version_tuple < _MIN_XREACH_VERSION:
+                min_str = ".".join(str(x) for x in _MIN_XREACH_VERSION)
+                return "warn", (
+                    f"xreach CLI 版本过旧（当前 {version_str}，需 >= {min_str}）。"
+                    f"旧版本无法读取长文推文（note_tweet）和 X Article。升级：\n"
+                    f"  npm install -g xreach-cli@latest"
+                )
+        except Exception:
+            pass  # version check failure is non-fatal; proceed to auth check
+
         try:
             r = subprocess.run(
                 [xreach, "auth", "check"], capture_output=True,
                 encoding="utf-8", errors="replace", timeout=10
             )
             if r.returncode == 0:
-                return "ok", "完整可用（读取、搜索推文）"
+                return "ok", "完整可用（读取、搜索推文，含长文/X Article）"
             return "warn", (
                 "xreach CLI 已安装但未配置 Cookie。运行：\n"
                 "  agent-reach configure twitter-cookies \"auth_token=xxx; ct0=yyy\""